Organic Cotton Fitted Waterproof Mattress Cover Twin 39 x 75 x 15, Is It Non-Toxic?
Avoid until the brand discloses waterproof coating chemistry.
This organic cotton protector adds an unspecified waterproof treatment, a common PFAS hiding spot in waterproof textiles. The brand does not publicly disclose what coating chemistry is used.
The better-graded swap
Avocado Green Mattress
Organic Cotton Mattress Cover and Pad Protector
85/100 safety
Same rubric that flunked this product. The swap earned Excellent.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Organic cotton with unspecified waterproof coating
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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Is Organic Cotton Fitted Cover Twin non-toxic? What it is made of
This mattress protector combines organic cotton (a lower-chemical textile base) with an unspecified waterproof coating applied to achieve liquid barrier function. The coating chemistry is the critical unknown, waterproof treatments on textiles are historically dominated by PFAS "forever chemicals" (PFAS), which bond to fabric fibers to repel water. The brand has not publicly disclosed whether this product uses PFAS-based, silicone, wax, or other coating technologies. Without that disclosure, assume fluorochemical coating is present.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Waterproof / stain-resistant treatment
Water-repellent coating treatments have historically used PFAS.
PFAS
Undisclosed coating is likely PFAS-based but could be silicone, polyurethane, or wax. No public testing available for this specific product. Risk level depends on coating identity, which the brand has not provided.
Source, ATSDR ↗Coating degradation and particle shedding
If the waterproof coating is PFAS-based, mechanical stress (folding, washing, abrasion against fitted sheets) can cause microscopic flaking. No reports of visible degradation in this product line, but no long-term durability testing is publicly available.
Volatile organic compound (VOC) off-gassing from coating
New waterproof coatings can emit low levels of VOCs during the first weeks of use, particularly if heating is applied. Organic cotton may reduce total VOC burden compared to polyester alternatives, but coating off-gassing cannot be ruled out without chemical disclosure.
What’s reassuring
Formaldehyde / VOCs
Organic cotton certification suggests avoidance of formaldehyde-releasers in dyeing and finishing, but the waterproof coating application is separate from the base textile process. No evidence of formaldehyde in this product, but coating process details are undisclosed.
Source, ATSDR ↗Azo dyes (synthetic color agents)
Organic cotton base reduces azo dye risk; organic standards restrict problematic dyes. No known issues reported for organic cotton products, but this applies to the fabric, not the coating layer.
How is this PFAS grade calculated?
The brand's record and disclosure
The brand is known for mattress manufacturing with organic certification claims but has maintained silence on waterproof coating composition across product lines. The brand does not appear to have published detailed chemical disclosures or third-party testing results for coatings on any of its textile products. No major recalls or controversies specific to this product line are on record, but the absence of transparency on PFAS use is itself a red flag in an industry where competitors increasingly disclose coating methods.
How it compares in its category
Most mattress protectors at this price point use PFAS-based coatings, making typical rather than exceptional. Premium alternatives (e.g., Coyuchi, Avocado) explicitly state PFAS-free coatings and provide third-party certifications. Budget-tier and mid-range protectors rarely disclose coating type, creating a broad gray market. Organic cotton certification alone does not mitigate waterproof coating risk; the coating is where chemical exposure occurs.
If you buy it
Before purchasing, contact directly to request the technical data sheet (TDS) or safety data sheet (SDS) for the waterproof coating and ask specifically whether it contains PFAS, fluorinated compounds, or legacy water-resistant finishes. Wash before use if possible, though this will not remove embedded coating. Avoid high heat (hot washing, high-heat drying) which can degrade coatings and potentially increase off-gassing. Replace if coating visibly peels, cracks, or degrades. If you are pregnant, nursing, or have young children in the home, consider a brand with certified PFAS-free coatings instead.
What is not known about PFAS in this product?
- Basis
- Model estimate, 52% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- has made none
Formulations change between production runs, so check the current label. How we grade.
What are the PFAS-free alternatives to Organic Cotton Fitted Waterproof Mattress Cover Twin 39 x 75 x 15?
- organic cotton
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- No PFAS statement found from the brand
- Organic cotton
- We found no PFAS statement from the brand
- Waterproofing chemical exposure
2 hazards checked on this product, all on its full breakdown.
- 100% linen, no reported coating
- We found no PFAS statement from the brand
- Heavy metals
3 hazards checked on this product, all on its full breakdown.
More mattress protectors grades
How we score, every product runs through the same public 0-100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.